Non-galvanic primary thermometry of a two-dimensional electron gas

F. Giazotto; G. Biasiol; J. Renard; L. Sorba; M. J. Mart\'inez-P\'erez; P. Torresani; S. De Franceschi; S. Gasparinetti

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Non-galvanic primary thermometry of a two-dimensional electron gas

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arxiv 1309.2176 v2 pith:54S3AIZ3 submitted 2013-09-09 cond-mat.mes-hall

P. Torresani , M. J. Martínez-Pérez , S. Gasparinetti , J. Renard , G. Biasiol , L. Sorba , F. Giazotto , S. De Franceschi This is my paper

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keywords electronthermalnon-galvanicprimarythermometerthermometrytwo-dimensionaladdressing

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We report the experimental realization of a non-galvanic, primary thermometer capable of measuring the electron temperature of a two-dimensional electron gas with negligible thermal load. Such a thermometer consists of a quantum dot whose temperature-dependent, single-electron transitions are detected by means of a quantum-point-contact electrometer. Its operating principle is demonstrated for a wide range of electron temperatures from 40 to 800 mK. This noninvasive thermometry can find application in experiments addressing the thermal properties of micrometer-scale mesoscopic electron systems, where heating or cooling electrons requires relatively low thermal budgets.

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